a centrifugal fan

A technology of centrifugal blades and blades, which is applied to components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., and can solve problems such as few centrifugal blades

Active Publication Date: 2015-09-16
NINGBO LANGDI IMPELLER MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many centrifugal fan blades with reasonable air volume and noise control in the market

Method used

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  • a centrifugal fan
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Embodiment Construction

[0017] Combine below figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Make a detailed explanation to the specific embodiment of the invention.

[0018] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 A centrifugal wind blade shown mainly includes an annular blade base plate 1, a hub 2, a blade 3 and a guide ring 4, the blade 3 is fixed between the annular blade base plate 1 and the guide ring 4, and the hub 2 is connected to the guide ring 4. The inner side of the annular leaf base plate 1 is integrated, the hub 2 is concentric with the annular leaf base plate 1, and the center of the hub 2 top is connected with the hub 5, and the shaft sleeve 5 has a shaft hole for connecting the motor shaft. The wheel hub 2 is provided with six heat dissipation holes 21 , and the six heat dissipation holes 21 are regularly arranged equidistantly around the hub 5 .

[0019] The number of blades 3 is 7, and the blade axis angle c between adjacent blades 3 i...

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PUM

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Abstract

The invention relates to the field of ventilating equipment. A centrifugal fan vane comprises a circular blade base board, a hub, blades and a deflector ring, wherein the number of the blades is seven; the blade axis angles between adjacent blades are different; the upper air intake angle and the lower air intake angle are both not larger than 10 degrees; the upper air exit angle and the lower air exit angle are both between 20-40 degrees; the upper part of each blade is composed of a connecting section and a non-connecting section which are connected into a whole, and the length of the connecting section accounts for 68-72% of the length of the top of the blade; and the air intake area between any adjacent blades is 70-75% of a corresponding air outlet area. The centrifugal fan vane has the advantages of novel structure, large air flow and low noise.

Description

technical field [0001] The invention relates to the field of ventilation equipment, in particular to a centrifugal fan blade. Background technique [0002] The centrifugal fan blade is a commonly used product in the field of ventilation equipment. The centrifugal fan blade includes a circular leaf base plate, a hub, a blade and a guide ring. The blade is fixed between the circular leaf base plate and the guide ring. The hub and the circular ring The inner side of the blade bottom plate is connected as a whole, the hub and the annular blade bottom plate are concentric, and a shaft sleeve is arranged at the center of the hub top, and the motor shaft passes through the shaft hole on the shaft sleeve to drive the fan blade to rotate during use. The performance of the centrifugal fan blade is mainly reflected in the air volume and noise control. The air volume and the noise level are interrelated. Generally, the noise is relatively high when the air volume is large, and the noise...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F04D29/28F04D29/30
Inventor高文铭韩小红施建立
OwnerNINGBO LANGDI IMPELLER MACHINERY